/* 一个文件中包含两个函数 */
#include <stdio.h>

void butler(void);
int main(void)
{
	printf("I will summon the butler function.\n");
	butler();
	printf("Yes. Bring me some tea and writeable DVDs.\n");

	return 0;
}

void butler(void)
{
	printf("You rang, sir?\n");
}
